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US 6,179,514 B2Granted
Telescopic tube joint
OwnerKun-Chia Chenginventor
Life of this patent
Estimating the term…
Abstract
A telescopic tube joint has a sleeve, which is adapted to securely coupling an outer tube and an inner tube, and defines a locking chamber therein. At least two locking rings are received in the locking chamber of the sleeve, the locking rings are forced apart by a biasing member between the locking rings and cause the locking rings to press on the outer wall of the inner tube to hold the inner tube in place with respect to the outer tube. When a user squeezes the locking rings, the inner tube will slide freely in the outer tube.
Claims4
A telescopic tube joint, comprising:
- a sleeve adapted to securely couple an outer tube and an inner tube, the sleeve defining a bore and a locking chamber communicating with the bore, the sleeve having an open slot in a side wall thereof for communicating with the locking chamber and a ring step formed on an inner wall thereof opposite to the open slot;
- a sleeve cap connected to the sleeve and having a central hole defined therein, the sleeve cap forming a small end with a key integrally formed to correspond to the open slot of the sleeve and having a ring step on the bottom thereof corresponding to the ring step of the sleeve;
- at least two locking rings, each having an annular member with a press tab connected to the annular member, each annular member being received in the locking chamber of the sleeve and defining a through hole through which the inner tube passes;
- and
- at least one biasing member provided between the annular members.
2 more elements
Dependencies are inferred from the claim text.